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Acute Kidney Injury in Children: IAP Guidelines
Acute kidney injury (AKI) previously known as acute renal failure (ARF), is an important emergency where prompt and appropriate management is life-saving. AKI usually occurs in patients with previously normal renal function but may occasionally be superimposed on preexisting renal disease (acute-on-chronic renal failure). The incidence of AKI in pediatric intensive care unit (PICU) is around 30–40% with mortality rates of 40–50%.
The Indian Academy of Pediatrics (IAP) has released Standard Treatment Guidelines 2022 for Acute Kidney Injury in Children. The lead author for these guidelines on Acute Kidney Injury in Children is Dr. Mukta Manthan along with co-author Dr. Bipin Jose and Dr. Mihir Sarkar. The guidelines come Under the Auspices of the IAP Action Plan 2022, and the members of the IAP Standard Treatment Guidelines Committee include Chairperson Remesh Kumar R, IAP Coordinator Vineet Saxena, National Coordinators SS Kamath, Vinod H Ratageri, Member Secretaries Krishna Mohan R, Vishnu Mohan PT and Members Santanu Deb, Surender Singh Bisht, Prashant Kariya, Narmada Ashok, Pawan Kalyan.
TABLE 1: Classification of acute kidney injury (KDIGO classification). | ||
AKI severity | Serum creatinine criteria | Urine output criteria |
Stage I | 1.5–1.9 times baseline Or ³ 0.3 mg/dL increase | <0.5 mL/kg/h for 6–12 hours |
Stage II | Increase ³ 2–2.9 times baseline | <0.5 mL/kg/h for ≥12 hours |
Stage III | 3.0 times baseline Or Increase in serum creatinine to ³ 4.0 mg/dL Or Initiation of renal replacement therapy Or In patients <18 years, decrease in eGFR to <35 mL/min per 1.73 m2 | <0.3 mL/kg/h for 24 hours or anuria for 12 hours |
BOX 1: Causes of AKI. |
Prerenal
|
Intrinsic Acute tubular necrosis
|
Hemolytic uremic syndrome: Diarrhea associated (D+) and atypical (D-) forms Glomerulonephritis (GN)
Interstitial nephritis (drug-induced and idiopathic) Bilateral renal vessel occlusion (arterial and venous) |
Postrenal
|
TABLE 2: Clinical features. | |
Clinical features | Likely diagnosis |
Edema, hematuria, and hypertension | Acute glomerulonephritis |
Dysentery, pallor, and jaundice | HUS |
History of fluid loss with severe dehydration | ATN |
Sudden passage of dark urine, pallor, and jaundice | Intravascular hemolysis |
Interrupted urinary stream and palpable bladder | Obstructive uropathy |
Abdominal colic, hematuria, and dysuria | Urinary tract calculi |
Altered sensorium and seizures | Uremic encephalopathy |
Acidotic breathing and pulmonary edema | Complications of AKI |
BOX 2: Investigations in patients with AKI. |
Blood
Urine
Radiology
|
Investigations to determine cause
|
TABLE 3: Management of complications. | ||
Complications | Management | Others |
Fluid overload |
| þ Consider dialysis þ 0.5–1% weight loss per day |
Pulmonary edema |
| þ Lung ultrasound—B line þ IVC assessment and ejection fraction þ Monitor by CVP line þ Dialysis (for fluid removal) |
Hypertension |
| |
Metabolic acidosis | IV or oral NaHCO3 | To monitor for fluid overload and hypernatremia |
Hyperkalemia |
maximum 30 g |
þ Continuous ECG monitoring þ Repeat potassium level |
Anemia | PCV transfusion at 5–10 mL/kg | Monitor for fluid overload |
Hyper- phosphatemia | Phosphate binders such as calcium carbonate, and sevelamer hydrochloride (only if significant) |
TABLE 4: Indications of kidney replacement therapy (KRT). | |
Indications | Features |
Fluid overload |
þ Determines the outcome þ >15% fluid overload resistant to diuretics |
Metabolic acidosis | pH<7.2 despite bicarbonate therapy |
Refractory hyperkalemia | K+ >6.0 or electrocardiogram (ECG) changes despite medical management |
Hyponatremia/hypernatremia | Symptomatic |
Uremia | Urea >160–200 mg/dL, encephalopathy |
Create space for more fluid | Blood products, drugs, and nutrition |
Removal of dialyzable toxins | Salicylate poisoning and phenobarbitone |
TABLE 5: KRT modalities. | |||
Modality | Potential setting in AKI | Advantages | Disadvantages |
IHD | Hemodynamically stable |
þ Lower cost than CRRT |
þ Dialysis disequilibrium |
CRRT | Hemodynamically unstable |
þ Hemodynamic stability
þ No risk of increased ICP |
þ Patient immobilization
|
PD |
þ Coagulopathy þ Difficult access
| þ No anticoagulation þ Hemodynamic stability þ Lower cost
| þ Protein loss þ Risk of peritonitis
þ Hyperglycemia |
- Kidney Disease: Improving Global Outcomes (KDIGO) Acute Kidney Injury Work Group. KDIGO Clinical Practice Guideline for Acute Kidney Injury. Kidney inter. 2012;2:1-138.
- Levey AS, Eckardt KU, Dorman NM, Christiansen SL, Hoorn EJ, Ingelfinger JR, et al. Nomenclature for kidney function and disease: report of a Kidney Disease: Improving Global Outcomes (KDIGO) Consensus Conference. Kidney Int. 2020;97(6):1117-29.
- Sutherland SM, Kwiatkowski DM. Acute kidney injury in children. Adv Chronic Kidney Dis. 2017;24(6):380-7.
The guidelines can be accessed on the official site of IAP: https://iapindia.org/standard-treatment-guidelines/
I have done my Bachelor of pharmacy from United Institute of Pharmacy and currently pursuing pharmaceutical MBA from Jamia hamdard. I worked as an intern at the position of content creator in Medical Dialogue and am highly obliged to the company for giving me this wonderful opportunity.
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751